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Lijia small classroom; [High and Low Temperature Test Chamber] Four Reasons for Excessive Uniformity

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Release date: 2019-06-26

1. Poor sealing performance
The sealing performance of the box is not good. For example, the door leak, will affect the temperature of the equipment studio uniform.

2. The sample volume is too large
If the test temperature deviation requires the test article to be placed in the working room, when the test article is too large, or the placement method or position is not appropriate, the air convection is blocked.It will also lead to a large temperature deviation.

3. Uneven heat conduction of the box wall
Due to the heat conduction of the wall of the high and low temperature test box, heat loss such as heat leakage of the high temperature box or cold leakage of the low temperature box is generated. In order to compensate for the heat loss, there must be an air supply temperature difference. The air supply temperature of the high temperature box is higher than the working temperature in the box, and the air supply temperature of the low temperature box is lower than the working temperature in the box. Because of the inevitable air supply temperature difference, the temperature unevenness is generated in the working room.

4. Structural asymmetry
The structure of the high and low temperature test chamber equipment largely affects the temperature uniformity in the middle of the work. Since the structure is difficult to be completely symmetrical, the temperature uniformity is adversely affected. The gate is in front, the air conditioning room is at the back of the box, and the air is supplied up and the air is returned down. This structure has good left and right symmetry, and can easily reach the left and right temperature uniformity.

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